*Personally* speaking, I dislike USB for anything other than really low-rent items (mice,
trackpads, graphics tablets, printers, keyboards etc).
I would get *either*
(and I have both for my older MBP) a dual-eSata express card interface or a FW one.
eSata is about three times quicker than FW800 but fewer drives have eSata
connections (I use WD Mybook Studios which have USB2.0/FW800/eSata ports).
get a FW800 one which gives you a completely new independent FW bus, which comes in handy
for high throughput applications (drives, audio interfaces, video, DSP cards etc etc).
Both should be inexpensive - for example, Sonnet do a dual eSata express card for
about £130, but the one I picked up from an online store for £30-ish works just as
I haven't looked into USB3.0 for a while, but if I recall it's still
a CPU-powered interface which means the throughput is still low and it requires CPU to
manage - I much prefer the direct access approach of FW or eSata which means they require
no CPU load and are much better at high throughput applications.
change in the future when TB gets going, but that's what I'd do now...
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